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Finding the Fourth Proportional to 133,236.60, 183,848.79 and 85,554.53

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Solution

The fourth proportional to 133,236.60, 183,848.79 and 85,554.53 is: 118,053.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,236.60 : 183,848.79 = 85,554.53 : x
  2. Step 2: Convert to fraction form
    133,236.60/183,848.79 = 85,554.53/x
  3. Step 3: Cross multiply
    133,236.60x = 183,848.79 × 85,554.53
  4. Step 4: Simplify right side
    133,236.60x = 15,729,096,429.29
  5. Step 5: Solve for x
    x = 15,729,096,429.29/133,236.60
  6. Step 6: Final answer
    x = 118,053.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.